<html>

<head>
    <script type="text/javascript">
        function disp_prompt() {
            var name = prompt("请输入您的名字", "Bill Gates")
            if (name != null && name != "") {
                document.write("你好！" + name + " 今天过得怎么样？")
            }
        }
    </script>
    <script type="text/javascript">
        function show_confirm() {
            var r = confirm("Press a button!");
            if (r == true) {
                alert("You pressed OK!");
            } else {
                alert("You pressed Cancel!");
            }
        }
    </script>
</head>

<body>

    <input type="button" onclick="show_confirm()" value="Show a confirm box" />
    <input type="button" onclick="disp_prompt()" value="显示提示框" />

</body>

</html>